How easy to build a Form?

<?page zscript-language="Ruby"?>
<window id="main_win" title='main win'>
<div id='cus_form'/>
<zscript src = 'rozk/bl_init.rb'/>
<zscript>
$dbc_test = Dbc.new('test','MySql','usr','pwd')
$cur_cus = Cursor.new($dbc_test,'cus','cus as Customer, name as Name, email as eMail','cus')
Form.gen_form($cur_cus,$cus_form)
</zscript>
</window>